Question

We can see the sun before the actual sunrise by about..?​

Answer 1

Answer:

no

Explanation:

Technically, we can't. Sunrise is defined as the moment that the Sun first appears over the horizon. ... This is because of the refraction of the light from the Sun by the Earth's atmosphere--the Earth's atmosphere bends the path of the light so that we see the Sun in a position slightly different from where it really is.

Answer 2

Answer:

2 minutes

Explanation:

The refraction of sunlight by the atmospheric layers lead to the illusion that the sun is above the horizon, even if it is still below it. So apparently, our eyes perceive the sun before sunrise earlier by 2 minutes.

The same applies to sunset.

So due to the phenomenon of refraction, the duration of the sun is increased by 2+2=4 minutes.

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